This is a great place if you will be staying in Bangkok a month or more. If staying only a short time, I'd stay closer to city center since you will be visiting there daily. It's a 35-50 minute BTS ride to the city center, but the condo is located right on the BTS line, so is very convenient. Perfect for long stays.
Other than the condo being a little bit outside the city center, you can't find a better deal for the price! The building is modern, new, with a wonderful 24 hour large gym and rooftop pool. And the two lobby areas have a cool vibe to do some laptop work. Many university students stay here, so the place has a vibrant (but very quiet and polite) atmosphere that I like. There are dozens of delicious food carts on both sides of the street in both direction. There's also a 7-11, Tops Market, and Big-C market a block away in either direction.
The unit itself is small but modern and clean. This particular unit is better than most (from those I saw) in that it is slight larger and on the floor of the buildings garden walkway. So while you do not get a city view from the windows, there are bushes and green right outside, and an extra large couch area to lay down and work on your laptop by the window.